CN103821676A - Tower foundation of wind generating set - Google Patents
Tower foundation of wind generating set Download PDFInfo
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- CN103821676A CN103821676A CN201410048302.6A CN201410048302A CN103821676A CN 103821676 A CN103821676 A CN 103821676A CN 201410048302 A CN201410048302 A CN 201410048302A CN 103821676 A CN103821676 A CN 103821676A
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- 239000004567 concrete Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 17
- 239000011150 reinforced concrete Substances 0.000 claims description 15
- 239000011796 hollow space material Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000011017 operating method Methods 0.000 description 3
- 238000009416 shuttering Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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Abstract
本发明公开一种风力发电机组的塔架基础，涉及风力发电技术领域，为解决现有的塔架基础无法满足预应力结构中的预应力索底部的两端锚固的要求、不利于预应力结构中其他部件的检修和更换。该风力发电机组的塔架基础包括：内部中空的塔架基础本体，塔架基础本体的顶部设有盖板，盖板上开设人孔；塔架基础本体的内壁设有环梁，用于支撑盖板；塔架基础本体中设有预应力索孔道，预应力索孔道穿过塔架基础本体的侧壁且一端与塔架基础本体的顶部连通、另一端与塔架基础本体的内部中空部分连通；塔架基础本体的底部与混凝土垫层连接，混凝土垫层位于地基表面。
The invention discloses a tower foundation for a wind power generator set, which relates to the technical field of wind power generation. In order to solve the problem that the existing tower foundation cannot meet the requirements for anchoring the two ends of the prestressed cable bottom in the prestressed structure and is not conducive to the prestressed structure. Maintenance and replacement of other components. The tower foundation of the wind turbine generator includes: a hollow tower foundation body with a cover plate on the top and a manhole on the cover plate; a ring beam is provided on the inner wall of the tower foundation body for support Cover plate; there is a prestressed cable hole in the tower foundation body. The prestressed cable hole passes through the side wall of the tower foundation body and has one end connected with the top of the tower foundation body and the other end with the internal hollow part of the tower foundation body. Connected; the bottom of the tower foundation body is connected to the concrete cushion, and the concrete cushion is located on the surface of the foundation.
Description
Technical field
The present invention relates to technical field of wind power generation, relate in particular to a kind of tower foundation of wind power generating set.
Background technique
Wind power generating set is called for short blower fan, mainly comprises the parts such as impeller, generator, pylon in blower fan, and wherein pylon is for supporting the parts such as impeller and generator on it.Pylon is located on blower foundation conventionally, and is fixedly connected with tower foundation.
Existing tower foundation is solid basis.But, when precast concrete pylon, conventionally adopt prestressed structure, and the two ends of prestressed cable bottom in prestressed structure need anchoring, and the anchored end of prestressed cable need to be carried out the operations such as stretch-draw.Because the basis of pylon in existing wind power generating set is solid construction, solid tower foundation cannot meet the requirement of the two ends anchoring of the prestressed cable bottom in prestressed structure; In addition, solid basis is also unfavorable for maintenance and the replacing of miscellaneous part in prestressed structure.
Summary of the invention
The object of this invention is to provide a kind of tower foundation of wind power generating set, cannot meet to solve existing tower foundation the two ends anchoring of prestressed cable in prestressed structure bottom requirement, be unfavorable for the maintenance of miscellaneous part and the problem of replacing in prestressed structure.
For achieving the above object, embodiments of the invention adopt following technological scheme:
A tower foundation for wind power generating set, comprises the tower foundation body of inner hollow, and the top of described tower foundation body is provided with cover plate, on described cover plate, offers manhole; The inwall of described tower foundation body is provided with ring beam, for supporting described cover plate; In described tower foundation body, be provided with prestressed cable duct, sidewall and one end that described tower foundation body is passed in described prestressed cable duct is communicated with the top of described tower foundation body, the other end is communicated with the inner hollow part of described tower foundation body; The bottom of described pylon body is connected with concrete cushion, and described concrete cushion is positioned at foundation surface.
Preferably, the bottom of described tower foundation body is also provided with base plate, and described base plate is positioned on described concrete cushion.
Wherein, described ring beam adopts reinforced concrete material; Described ring beam encloses along the hollow space circumferential arrangement one of described tower foundation body.
Preferably, the material of described base plate is reinforced concrete.
Wherein, the tower foundation in described wind power generating set also comprises fill stratum, for burying described tower foundation.
Preferably, described base plate and described this body by integral forming of tower foundation.
Wherein, described ring beam and described this body by integral forming of tower foundation.
Preferably, described cover plate is reinforced concrete or steel material.
Wherein, the hollow space of described tower foundation body comprises first segment and second section, and described second section is positioned at the cross-section area that the bottom of described tower foundation body and cross-section area are greater than described first segment; Described ring beam is arranged in described first segment.
Preferably, the outer shape in the cross section of described tower foundation body is circle or polygonal.
The useful technique effect of technique scheme is:
In the tower foundation of the wind power generating set that the embodiment of the present invention is carried, the material of tower foundation body can be reinforced concrete construction, and it is the major bearing structures of the total pylon of described wind power generating set; Wherein, the material of concrete cushion can be plain concrete, does not contain the concrete structure of reinforcing bar.The effect of concrete cushion is levelling, and can make the suffered load Transmit evenly from wind power generating set and described tower foundation of concrete cushion to foundation surface; The inner hollow part of tower foundation body can provide operating space for operator; Because the top of tower foundation body is provided with cover plate, cover plate not only can be by the tower foundation body interior sealing of hollow, can also on the cover board place other article such as regulator cubicle, the manhole of offering on cover plate can make operator arrive the inner hollow part of tower foundation body via manhole; In tower foundation body, be also provided with prestressed cable duct, prestressed cable can arrive from the top of tower foundation body the inner hollow part of tower foundation body via prestressed cable duct, like this, operator can carry out the operations such as stretch-draw in the inner hollow part of tower foundation body to prestressed cable, anchoring is carried out in the two ends, prestressed cable bottom in prestressed structure in the tower foundation in this wind power generating set.In addition, in the time that the miscellaneous part in prestressed cable or prestressed structure breaks down, damages or lost efficacy, can be by the parts of fault, damage or inefficacy via the dismounting of prestressed cable duct, the parts that more renew, therefore easy access and replacing.
In sum, in the time using the tower foundation of this wind power generating set, due to the structure that the tower foundation body in this basis is hollow, make operator can enter the hollow space of tower foundation, and in this basic internal, anchoring is carried out in the two ends of the prestressed cable bottom in prestressing mechanism; And the tower foundation body of hollow is also convenient to maintenance and the replacing of parts in prestressed structure.
Accompanying drawing explanation
The schematic top plan view of the tower foundation of a kind of wind power generating set that Fig. 1 a provides for the embodiment of the present invention;
Fig. 1 b is that the A of tower foundation of the wind power generating set shown in Fig. 1 a is to generalized section.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
In description of the invention, it will be appreciated that, orientation or the position relationship of the indications such as term " " center ", " on ", D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; rather than the device of indication or hint indication or element must have specific orientation, with specific orientation structure with operate, therefore can not be interpreted as limitation of the present invention.
Term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Referring to Fig. 1 a and Fig. 1 b, the embodiment of the present invention has been carried a kind of tower foundation of wind power generating set, and this tower foundation comprises the tower foundation body 11 of inner hollow, and the top of tower foundation body 11 is provided with cover plate 12, offers manhole 121 on cover plate 12; The inwall of tower foundation body 11 is provided with ring beam 111, for supporting cover plate 12; In tower foundation body 11, be provided with prestressed cable duct 112, sidewall and one end that tower foundation body 11 is passed in prestressed cable duct 112 is communicated with the top of tower foundation body 11, the other end is communicated with the inner hollow part of tower foundation body 11; The bottom of tower foundation body 11 is connected with concrete cushion 13, and concrete cushion 13 is positioned at ground (not shown) surface.
In above-mentioned tower foundation, the material of tower foundation body 11 can be reinforced concrete construction, and it is the major bearing structures of the total pylon of described wind power generating set; Wherein, the material of concrete cushion 13 can be plain concrete, does not contain the concrete structure of reinforcing bar.The effect of concrete cushion 13 is levellings, and can make the suffered load Transmit evenly from wind power generating set and described tower foundation of concrete cushion 13 to foundation surface; The inner hollow part of tower foundation body 11 can provide operating space for operator; Because the top of tower foundation body 11 is provided with cover plate 12, cover plate 12 not only can be by tower foundation body 11 enclose insides of hollow, can also on cover plate 12, place regulator cubicle 14 other article such as grade, the manhole 121 of offering on cover plate 12 can make operator arrive the inner hollow part of tower foundation body 11 via manhole 121; In tower foundation body 11, be also provided with prestressed cable duct 112, prestressed cable 15 can arrive from the top of tower foundation body 11 the inner hollow part of tower foundation body 11 via prestressed cable duct 112, like this, operator can carry out the operations such as stretch-draw to prestressed cable 15 in the inner hollow part of tower foundation body 11, anchoring is carried out in prestressed cable 15 two ends, bottom in prestressed structure in the tower foundation in this wind power generating set.In addition, in the time that the miscellaneous part in prestressed cable 15 or prestressed structure breaks down, damages or lost efficacy, the parts of fault, damage or inefficacy can be dismantled to the parts that more renew, therefore easy access and replacing via prestressed cable duct 112.
In sum, in the tower foundation of the wind power generating set that the embodiment of the present invention provides, in the time using the tower foundation of this wind power generating set, due to the structure that is hollow of the tower foundation body 11 in this basis, make operator can enter the hollow space of tower foundation, and in this basic internal, anchoring is carried out in the two ends of prestressed cable 15 bottoms in prestressing mechanism; And the tower foundation body 11 of hollow is also convenient to maintenance and the replacing of parts in prestressed structure.
In above-mentioned tower foundation, the bottom of tower foundation body 11 also can be provided with base plate 16, and base plate 16 is positioned on concrete cushion 13.In the time of the hollow space operation of operator at tower foundation, base plate 16 can provide operation plane for operator, and base plate 16 can also prevent in Groundwater infiltration tower foundation.
In above-described embodiment, ring beam 111 can adopt reinforced concrete material; Ring beam 111 can enclose along the hollow space circumferential arrangement one of tower foundation body 11.Ring beam 111 upper surfaces are not less than 100mm apart from tower foundation upper surface, are not more than 800mm.Ring beam 111 is for the cover plate 12 on support tower basis, because reinforced concrete construction intensity is higher, and stress-bearing capability excellence, thus ring beam 111 can provide reliable support for cover plate 12; Ring beam 111 encloses along the hollow space circumferential arrangement one of tower foundation body 11, can guarantee that ring beam 111 is larger to the supporting surface area of cover plate 12, guarantees further the good support effect of ring beam 111 to cover plate 12.
In above-mentioned tower foundation, the material of base plate 16 can be reinforced concrete, and the stressed effect of reinforced concrete is better, and intensity is higher.Certainly, the material of base plate 16 is not limited to reinforced concrete, other materials that also can be known to the skilled person.
In the tower foundation that above-described embodiment provides, can also comprise fill stratum 17, for burying described tower foundation.After described tower foundation construction, can tower foundation be buried by backfill, form fill stratum 17, fill stratum 17 can improve the antidumping performance of described tower foundation.
In above-described embodiment, base plate 16 can be one-body molded with tower foundation body 11.Particularly can be in the time making tower foundation body 11, base plate 16 is made as together to the structure with tower foundation body 11 one simultaneously, for example, in the time making the mould of tower foundation body 11, also the mould of base plate 16 is together made, can reduce like this making step of the constituent element of tower foundation, thereby raise the efficiency.
Similarly, in above-described embodiment, ring beam 111 can be one-body molded with tower foundation body 11, can be specifically in the time making the mould of tower foundation body 11, correspondingly the mould of ring beam 111 together made, and to reduce making step, thereby raises the efficiency.
In above-mentioned tower foundation, cover plate 12 can be reinforced concrete or steel material.Reinforced concrete material or steel matter all have higher structural strength, can meet the strength demand of cover plate 12.
In above-mentioned tower foundation, the hollow space of tower foundation body 11 can comprise first segment 113 and second section 114, and second section 114 is positioned at the cross-section area that the bottom of tower foundation body 11 and cross-section area are greater than first segment 113; Ring beam 111 is arranged in first segment 113.Because operator are in the operation of the bottom of tower foundation body 11, larger space is conducive to operator's operation, the spatial design that can be therefore second section 114 by that joint of operator's operation obtains larger, and the spatial design of first segment 113 is obtained smaller, first segment 113 has less hollow space, thereby has guaranteed that tower foundation body 11 has better structural strength; Second section 114 has larger hollow space, thereby meets operator's working space demand.
Referring to Fig. 1 a, in above-described embodiment, the outer shape in the cross section of tower foundation body 11 can be circle or polygonal.The outer shape of tower foundation body 11 can, according to just selecting, be not limited to circle or polygonal.
The embodiment of the present invention also provides a kind of method of the tower foundation of making above-mentioned wind power generating set, and the method comprises following operating procedure:
The first step: the local earth excavation of member tower foundation;
Particularly, can be in the boundary of works area of above-mentioned tower foundation, the degree of depth by earth excavation to base plate 16.
Second step: concreting bed course 13;
Particularly, can be according to relevant designing requirement, concrete cushion 13 is built complete and done corresponding maintenance.
The 3rd step: assembling reinforcement;
Particularly, can be the requirement of strength according to tower foundation, the reinforcing bar of colligation tower foundation body 11 and base plate 16, and prestressed cable duct 112 is fixed on position on reinforcing mesh as required; The reinforcing bar binding of the reinforcing bar of ring beam 111 and tower foundation body 11 is become one.
The 4th step: support shuttering is set;
Particularly, can be to install template in outside and the inner side of tower foundation body 11, support masterplate can not be done at the top of tower foundation body 11.
The 5th step: build tower foundation body 11;
Particularly, can be by concreting in support shuttering, complete building of tower foundation body 11, base plate 16 and ring beam 111.
The 6th step: lifting cover plate 12;
Particularly, can be to utilize hanging device as crane, cover plate 12 is lifted to the supporting surface of ring beam 111.
The 7th step: member fill stratum 17;
Particularly, can be by earth excavation step in the above-mentioned first step, the backfilling of earthwork of excavation is to tower foundation body, and member becomes fill stratum 17.
The 8th step: lifting pylon;
Particularly, can be to utilize hanging device to be lifted into the top of above-mentioned tower foundation pylon.
The 9th step: prestressed rope 15;
Particularly, can be the prestressed cable duct 112 through tower foundation body 11 sidewalls by prestressed cable 15, and tensioning equipment is put into tower foundation body 11 inside, for operator, prestressed cable 15 be carried out to stretch-draw, anchoring.
The tenth step: operation and maintenance;
Particularly, can be operator enter tower foundation body 11 hollow space via the manhole 121 on cover plate 12, check and safeguard the anchorage head at prestressed cable 15 two ends, bottom.
In the method that above-described embodiment provides, each operating procedure is not limited to the above, can increase and decrease or replace according to actual conditions; Concrete operating method those skilled in the art also can make replacement in the situation that not paying creative work, all belong to protection scope of the present invention.
In the description of this specification, specific features, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (10)
1. a tower foundation for wind power generating set, is characterized in that, comprises the tower foundation body of inner hollow, and the top of described tower foundation body is provided with cover plate, on described cover plate, offers manhole; The inwall of described tower foundation body is provided with ring beam, for supporting described cover plate; In described tower foundation body, be provided with prestressed cable duct, sidewall and one end that described tower foundation body is passed in described prestressed cable duct is communicated with the top of described tower foundation body, the other end is communicated with the inner hollow part of described tower foundation body; The bottom of described tower foundation body is connected with concrete cushion, and described concrete cushion is positioned at foundation surface.
2. the tower foundation in wind power generating set according to claim 1, is characterized in that, the bottom of described tower foundation body is also provided with base plate, and described base plate is positioned on described concrete cushion.
3. the tower foundation in wind power generating set according to claim 1, is characterized in that, described ring beam adopts reinforced concrete material; Described ring beam encloses along the hollow space circumferential arrangement one of described tower foundation body.
4. the tower foundation in wind power generating set according to claim 2, is characterized in that, the material of described base plate is reinforced concrete.
5. the tower foundation in wind power generating set according to claim 1, is characterized in that, also comprises fill stratum, for burying described tower foundation.
6. according to the tower foundation in the wind power generating set described in claim 2 or 4, it is characterized in that described base plate and described this body by integral forming of tower foundation.
7. the tower foundation in wind power generating set according to claim 3, is characterized in that, described ring beam and described this body by integral forming of tower foundation.
8. the tower foundation in wind power generating set according to claim 1, is characterized in that, described cover plate is reinforced concrete or steel material.
9. according to the tower foundation in the wind power generating set described in claim 1-5 any one, it is characterized in that, the hollow space of described tower foundation body comprises first segment and second section, and described second section is positioned at the cross-section area that the bottom of described tower foundation body and cross-section area are greater than described first segment; Described ring beam is arranged in described first segment.
10. according to the tower foundation in the wind power generating set described in claim 1-5 any one, it is characterized in that, the outer shape in the cross section of described tower foundation body is circle or polygonal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410048302.6A CN103821676A (en) | 2014-02-12 | 2014-02-12 | Tower foundation of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410048302.6A CN103821676A (en) | 2014-02-12 | 2014-02-12 | Tower foundation of wind generating set |
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| CN103821676A true CN103821676A (en) | 2014-05-28 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895106A (en) * | 2015-05-27 | 2015-09-09 | 中国十七冶集团有限公司 | Installing device and method for lower anchor plate for wind driven generator construction |
| CN104988944A (en) * | 2015-07-17 | 2015-10-21 | 中国能源建设集团云南省电力设计院有限公司 | Prestressed anchor bolt type annular draught fan foundation |
| CN105002924A (en) * | 2015-08-03 | 2015-10-28 | 瑞风能源（武汉）工程技术有限公司 | Hollow ground anchor cage base |
| CN106049522A (en) * | 2016-07-01 | 2016-10-26 | 瑞风能源（武汉）工程技术有限公司 | Hollow wind power generation tower foundation |
| CN106088136A (en) * | 2016-07-29 | 2016-11-09 | 瑞风能源（武汉）工程技术有限公司 | The standoff generation power foundation of wind power of a kind of band and construction technology thereof |
| CN106121931A (en) * | 2016-08-30 | 2016-11-16 | 中国电建集团西北勘测设计研究院有限公司 | A kind of replaceable prestress anchorage cable blower foundation for high-power wind turbine unit |
| CN106567809A (en) * | 2016-10-08 | 2017-04-19 | 霍尔果斯新国金新能源科技有限公司 | Concrete tower drum assembly and assembly method thereof |
| CN107386312A (en) * | 2017-07-18 | 2017-11-24 | 上海纽安洁新能源科技有限公司 | A kind of externally pre-stressed concrete blower fan pylon hyollow foundation |
| CN109630364A (en) * | 2018-12-10 | 2019-04-16 | 北京天杉高科风电科技有限责任公司 | The blower foundation and its manufacturing method of wind power generating set, wind power generating set |
| CN112469864A (en) * | 2018-04-16 | 2021-03-09 | 通用零件基础有限公司 | Base for wind turbine |
| CN112922016A (en) * | 2021-01-22 | 2021-06-08 | 上海电气风电集团股份有限公司 | Tower foundation and foundation module thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104895106A (en) * | 2015-05-27 | 2015-09-09 | 中国十七冶集团有限公司 | Installing device and method for lower anchor plate for wind driven generator construction |
| CN104988944A (en) * | 2015-07-17 | 2015-10-21 | 中国能源建设集团云南省电力设计院有限公司 | Prestressed anchor bolt type annular draught fan foundation |
| CN105002924A (en) * | 2015-08-03 | 2015-10-28 | 瑞风能源（武汉）工程技术有限公司 | Hollow ground anchor cage base |
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| CN106088136A (en) * | 2016-07-29 | 2016-11-09 | 瑞风能源（武汉）工程技术有限公司 | The standoff generation power foundation of wind power of a kind of band and construction technology thereof |
| CN106121931A (en) * | 2016-08-30 | 2016-11-16 | 中国电建集团西北勘测设计研究院有限公司 | A kind of replaceable prestress anchorage cable blower foundation for high-power wind turbine unit |
| CN106567809A (en) * | 2016-10-08 | 2017-04-19 | 霍尔果斯新国金新能源科技有限公司 | Concrete tower drum assembly and assembly method thereof |
| CN107386312A (en) * | 2017-07-18 | 2017-11-24 | 上海纽安洁新能源科技有限公司 | A kind of externally pre-stressed concrete blower fan pylon hyollow foundation |
| CN112469864A (en) * | 2018-04-16 | 2021-03-09 | 通用零件基础有限公司 | Base for wind turbine |
| CN109630364A (en) * | 2018-12-10 | 2019-04-16 | 北京天杉高科风电科技有限责任公司 | The blower foundation and its manufacturing method of wind power generating set, wind power generating set |
| CN112922016A (en) * | 2021-01-22 | 2021-06-08 | 上海电气风电集团股份有限公司 | Tower foundation and foundation module thereof |
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